Patent EP-3939773-A1 (EP)
Inventor: Avdeev Artem Romanovich
IPC: B29C64/118
Filed: 2020-01-24
Abstract: The claimed group of inventions relates to the technology of layerwise objects production based on a digital model, using a fibrous molten material. The 3D objects additive production method includes stages at which a digital 3D model of the specified object is created, the model is divided into the product core and product body which are separated into the flat and curved layers, respectively, and the construction data is prepared; after that, the construction data is sent to the controlling unit, the product position relative to the receiving surface (10) is adjusted, the material necessary for this process is supplied, the zero coordinates are determined for the print head (2) position along the X-axis, for the transfer device (13) position along the Z-axis and for the first structural element (12) position about the X-axis, the receiving surface (10) is brought into horizontal position, the first part of the substrate (26) is produced on the receiving surface, the base of the same substrate protruding beyond the receiving surface (10) borders and being located along the butt end of the latter, the position of the receiving surface (10) is changed to vertical one, the flat substrate (27) is produced using the first part of the substrate (26) as a basis, the core (28) is produced on the second part of the substrate (27), the position of the receiving surface (10) is changed to horizontal one, the product body (30) is produced by applying material onto the core (28) in layers. The 3D objects additive production device (1) comprises at least one print head (2) for feeding the material, the same print head being configured to move along the X-axis and/or along the Y-axis, at least one motor (3) for feeding the material, at least two motors (4, 5) for moving the print head (2), at least one guide (6) for moving the print head (2) along the X-axis, at least two guides (7, 8) for moving the print head (2) along the Y-axis, the same guides being arranged at the opposite sides of the print head (2) across at least one guide (6) for moving the print head (2) along the X-axis, unit (9) designed to accommodate the receiving surface (10) and the receiving surface (10) for receiving the material supplied from the print head (2), wherein the unit (9) is configured in the form of at least the first and the second structural elements (12, 11) and is equipped with the transfer device (13) for moving along the Z-axis perpendicular to the X-Y plane, at least one second structural element (11) fixed on the transfer device (13) on one side and movably connected to at least the first structural element (12) on the opposite side, wherein at least one first structural element (12) is configured to rotate about the X-axis, the receiving surface (10) is arranged on the first structural element (12) being configured to rotate about the Z-axis, the said unit (9) comprising at least one motor (14) for moving along the Z-axis, at least two guides (15, 16) for moving along the Z-axis, at least one motor (17) for rotating the first structural element (12) about the X-axis and at least one motor (18) for rotating the receiving cylindrical surface (10) about the Z-axis.